James allbeet sissof



(No Model.)

J. A. SISSON.

FILLING BO'BBIN.

No. 320,008. Patented June 16, 1885.v l

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NITED STATES Erice.

PATENT it FILLINGBOBBIN.

SPECIFICATION forming part of Letters Patent No. 320,008, dated June 16, 1885.

Application filed November 15, 1884. (No model.)

To all whom, it may concern,.-

Be it known that I, J AMES A. SIssoN, of Greenwich, in the county of Kent, of the State of Rhode Island, have invented a new and useful Improvement in Filling-Bobbins; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which- Figure l is a side View, and Fig. 2 a longitudinal section, of a bobbin, full size, containing my invention, the nature of which is defined in the claim hereinafter presented. Fig. 3 is a longitudinal section of a bobbin of the kind to which my said improvement relates, the base portion of such bobbin being a series of steps arranged therein from bottom to top of it, the tread of each being in a plane at right angles to theA longitudinal axis of the bobbin, while the riser is parallel to such axis or slightly inclining relatively to the tread and terminating against it with asharp edge.

It is very difficult if notimpossible to manufacture a bobbin of such kind with such steps, especially .when small and numerous, as they generally become more orless chipped,nicked, or notched under the operation of the turningtool, as well as while the bobbin may be in use. When the cop is wearing off,7 to use an expression common to weavers, as the yarn runs over the edge of the bruised or imperfect steps it frequently becomes cut or broken thereby, and in consequence thereof a large percentage of waste results,particularlyin the weaving of of fine goods. Moreover, with a bobbin having such steps, the cop is rarely held on it until all of the yarn is woven off,77 as there-- peated blows of the picker upon the shuttle, especially when throwing it with the butt end ofthe bobbin forward, cause the yarn to be knocked off,77 as weavers say, toward the smaller end of the bobbin, all of which is mostly if not entirely prevented by my invention.

In carrying out my invention I usually have fewer and larger steps and make the riser cylindrical, or substantially so, for a short distance down from its top, and thence concave instead of straight to the tread of the next step below, all being as shown in Figs. l and 2 of the drawings,in which the conical portion ofthe bobbin-base is represented at A and the bob- 5o bin-shankat B. The steps are exhibited at C C C, Snc., their treads at a, and risers atb c, the part b of each being cylindrical, and the part c being concave from the cylindrical part down to the tread of the next step below. The cylindrical partprevents the cutting and Wearing of thecop. The concave part not only enables the cop to be laid Without being jammed into the vertex of an angle between the tread and the next riser above, but holds the 6o cop from slipping either way on the bobbin or contracting lengthwise and bulging laterally on the conical part of the bobbin.

The improvement in practice saves much wasteincidenttothe oldconstruction of bobbin, besides being productive of other advantages.

I do not claim a bobbin having a series of steps and each formed with its riser straight and making an angle with its tread, as shown in Fig. 3 ofthe aforesaid drawings. 7o

I claim- A lling-bobbin having the riser of each of the steps of the conical part of the base portion of such bobbin cylindrical, or substantially so, at top and for a short distance therefrom, and thence concave to the tread of the next step below, all being substantially as set forth.

JAMES ALLBERT SISSON.

Witnesses:

HANsoN A. THoMAs, HARRY S. ABBOTT. 

